Tapas has no relation with webtoon at all. The only relation is the two is a webcomic hosting website. And since the forums is the place where artist talks about their and others works, it's inevitable that webtoon will be often involved in the conversation, plus, they can't talk about things like that in webtoon because webtoon doesn't have a forums.
This is a free place for whoever to talk to their heart content. Maybe because of that the mods make the WEBTOON LIVE category.
Well, at least I think so. XD